Results 131 to 140 of about 19,573 (204)

Measuring the Inflaton Coupling in the CMB

, 2021
We study the conditions under which simple relations between the inflaton couplings and CMB observables can be established. The crucial criterion is to avoid feedback effects during reheating, which tend to introduce a complicated dependence of the CMB ...
Drewes, Marco
core  

Intrinsic Entropy of Squeezed Quantum Fields and Nonequilibrium Quantum Dynamics of Cosmological Perturbations. [PDF]

Entropy (Basel), 2021
Hsiang JT, Hu BL.
europepmc   +1 more source

Gauge invariant MSSM inflaton

, 2006
We argue that all the necessary ingredients for successful inflation are present in the flat directions of the Minimally Supersymmetric Standard Model. We show that out of many gauge invariant combinations of squarks, sleptons and Higgses, there are two directions, ${\bf LLe}$, and ${\bf udd}$, which are promising candidates for the inflaton. The model
Allahverdi, Rouzbeh, Garcia-Bellido, Juan, Enqvist, Kari, Mazumdar, Anupam   +3 more
openaire   +2 more sources

Electromagnetic Conversion into Kinetic and Thermal Energies. [PDF]

Entropy (Basel), 2023
Brandenburg A, Protiti NN.
europepmc   +1 more source

An effective cosmological collider

Journal of High Energy Physics
Effective field theories (EFTs) of heavy particles coupled to the inflaton are rife with operator redundancies, frequently obscured by sensitivity to both boundary terms and field redefinitions.
Nathaniel Craig, Soubhik Kumar, Amara McCune   +2 more
doaj   +1 more source

Light dark photon dark matter from inflation. [PDF]

J High Energy Phys, 2020
Nakai Y, Namba R, Wang Z.
europepmc   +1 more source

Classical decay of inflaton

, 1996
We present the first fully non-linear calculation of inflaton decay. We map inflaton decay onto an equivalent classical problem and solve the latter numerically. In the $ ^4$ model, we find that parametric resonance develops slower and ends at smaller values of fluctuating fields, as compared to estimates existing in literature.
Khlebnikov, S. Yu., Tkachev, I. I.
openaire   +2 more sources

An exceptional G(2) extension of the Standard Model from the correspondence with Cayley-Dickson algebras automorphism groups. [PDF]

Sci Rep, 2021
Masi N.
europepmc   +1 more source

Detection of early-universe gravitational-wave signatures and fundamental physics. [PDF]

Gen Relativ Gravit, 2022
Caldwell R, Cui Y, Guo HK, Mandic V, Mariotti A, No JM, Ramsey-Musolf MJ, Sakellariadou M, Sinha K, Wang LT, White G, Zhao Y, An H, Bian L, Caprini C, Clesse S, Cline JM, Cusin G, Fornal B, Jinno R, Laurent B, Levi N, Lyu KF, Martinez M, Miller AL, Redigolo D, Scarlata C, Sevrin A, Haghi BSE, Shu J, Siemens X, Steer DA, Sundrum R, Tamarit C, Weir DJ, Xie KP, Yang FW, Zhou S.   +37 more
europepmc   +1 more source

M-theory, black holes and cosmology. [PDF]

Proc Math Phys Eng Sci, 2021
Kallosh R.
europepmc   +1 more source